DNA Replication Quiz

What is the shape of the DNA molecule?

• Single helix

• Double helix

• Triple helix

• Quadruple helix

Which enzyme is responsible for unwinding the DNA double helix during replication?

• DNA polymerase

• Helicase

• Ligase

• Primase

What is the role of DNA polymerase in DNA replication?

• It unwinds the DNA double helix.

• It seals the gaps between the Okazaki fragments.

• It synthesizes new DNA strands complementary to the template strands.

• It creates RNA primers.

Which of the following components is NOT a part of a nucleotide?

• Phosphate group

• Nitrogenous base

• Ribose sugar

• Amino acid

During DNA replication, the strands of the double helix serve as what?

• Templates for creating two new double helices

• The only components needed to create new cells

• The molecules that prevent the DNA from unwinding

• The enzymes that build the new DNA strands

What is the significance of the leading and lagging strands during DNA replication?

• The leading strand is synthesized continuously, while the lagging strand is synthesized in fragments.

• The leading strand is synthesized in fragments, while the lagging strand is synthesized continuously.

• Both strands are synthesized continuously.

• Both strands are synthesized in fragments.

Which enzyme is responsible for sealing the gaps between the Okazaki fragments on the lagging strand?

• DNA polymerase

• Helicase

• Ligase

• Primase

What is the role of RNA primers in DNA replication?

• They help in unwinding the DNA double helix.

• They signal the end of DNA replication.

• They provide the starting point for DNA synthesis.

• They repair the mistakes in DNA replication.

Which of the following best describes the direction of DNA synthesis?

• 5' to 3' direction

• 3' to 5' direction

• Both 5' to 3' and 3' to 5' directions

• The direction is not specific and can vary.

What is the function of the antiparallel strands in DNA?

• They allow for the continuous replication of both strands.

• They prevent the DNA from replicating.

• They ensure that DNA replication is conservative.

• They ensure that each strand serves as a template for replication.